<%--
  Created by IntelliJ IDEA.
  User: oldliu
  Date: 2022/8/29
  Time: 15:22
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
 <%
     //pageContext<request<session<application
     pageContext.setAttribute("data","data in page");
     request.setAttribute("data","data in request");
     session.setAttribute("data","data in session");
     application.setAttribute("data","data in application");

     request.getRequestDispatcher("b.jsp").forward(request,response);
 %>
</body>
</html>
